Runnin' Raiders Strava
One of the ways we track our work is our overall volume; not just "mileage" but the total volume of all kinds of work we do.
Strava is the easiest/best tool for us right now. In many ways, it helps with motivation/accountability... I know it has for me, personally.
When you sign-up, you'll see there's somewhat of a "social media" aspect of it, so consider setting your profile to "private" if you don't want your information shared.
Although a GPS watch is nice, you certainly don't need one. Download the Strava app on your phone and you can track all of your runs from your built-in phone GPS.
Or..just add your workouts in manually.
I have done all three methods and they all work well!.
Join the Runnin' Raiders HERE